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WSL2-Linux-Kernel
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alpha: kill big kernel lock 

All uses of the BKL on alpha are totally bogus, nothing
is really protected by this. Remove the remaining users
so we don't have to mark alpha as 'depends on BKL'.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Arnd Bergmann 2010-09-14 19:34:56 -04:00 коммит произвёл Matt Turner
Родитель b97f897d60
Коммит 12e750d956
2 изменённых файлов: 0 добавлений и 8 удалений
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5
arch/alpha/kernel/osf_sys.c
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@ -15,7 +15,6 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/mm.h> #include <linux/mm.h>
#include <linux/smp.h> #include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/stddef.h> #include <linux/stddef.h>
#include <linux/syscalls.h> #include <linux/syscalls.h>
#include <linux/unistd.h> #include <linux/unistd.h>
@ -69,7 +68,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
{ {
struct mm_struct *mm; struct mm_struct *mm;
lock_kernel();
mm = current->mm; mm = current->mm;
mm->end_code = bss_start + bss_len; mm->end_code = bss_start + bss_len;
mm->start_brk = bss_start + bss_len; mm->start_brk = bss_start + bss_len;
@ -78,7 +76,6 @@ SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
printk("set_program_attributes(%lx %lx %lx %lx)\n", printk("set_program_attributes(%lx %lx %lx %lx)\n",
text_start, text_len, bss_start, bss_len); text_start, text_len, bss_start, bss_len);
#endif #endif
unlock_kernel();
return 0; return 0;
} }
@ -517,7 +514,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
long error; long error;
int __user *min_buf_size_ptr; int __user *min_buf_size_ptr;
lock_kernel();
switch (code) { switch (code) {
case PL_SET: case PL_SET:
if (get_user(error, &args->set.nbytes)) if (get_user(error, &args->set.nbytes))
@ -547,7 +543,6 @@ SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
error = -EOPNOTSUPP; error = -EOPNOTSUPP;
break; break;
}; };
unlock_kernel();
return error; return error;
} }

3
arch/alpha/kernel/traps.c
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@ -13,7 +13,6 @@
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/tty.h> #include <linux/tty.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/smp_lock.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/kallsyms.h> #include <linux/kallsyms.h>
@ -623,7 +622,6 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
return; return;
} }
lock_kernel();
printk("Bad unaligned kernel access at %016lx: %p %lx %lu\n", printk("Bad unaligned kernel access at %016lx: %p %lx %lu\n",
pc, va, opcode, reg); pc, va, opcode, reg);
do_exit(SIGSEGV); do_exit(SIGSEGV);
@ -646,7 +644,6 @@ got_exception:
* Yikes! No one to forward the exception to. * Yikes! No one to forward the exception to.
* Since the registers are in a weird format, dump them ourselves. * Since the registers are in a weird format, dump them ourselves.
*/ */
lock_kernel();
printk("%s(%d): unhandled unaligned exception\n", printk("%s(%d): unhandled unaligned exception\n",
current->comm, task_pid_nr(current)); current->comm, task_pid_nr(current));